wehub-resource-sync
74 lines
1.5 KiB
Go
74 lines
1.5 KiB
Go
package fileutil
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import (
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"os"
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"path/filepath"
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"testing"
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)
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func TestCopyFile(t *testing.T) {
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dir := t.TempDir()
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src := filepath.Join(dir, "src.txt")
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dst := filepath.Join(dir, "dst.txt")
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content := []byte("hello world")
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if err := os.WriteFile(src, content, 0o644); err != nil {
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t.Fatal(err)
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}
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if err := CopyFile(src, dst); err != nil {
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t.Fatalf("CopyFile: %v", err)
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}
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got, err := os.ReadFile(dst)
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if err != nil {
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t.Fatalf("reading dst: %v", err)
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}
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if string(got) != string(content) {
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t.Fatalf("got %q, want %q", got, content)
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}
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}
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func TestCopyFileMissingSrc(t *testing.T) {
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dir := t.TempDir()
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err := CopyFile(filepath.Join(dir, "nonexistent"), filepath.Join(dir, "dst"))
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if err == nil {
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t.Fatal("expected error for missing source")
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}
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}
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func TestCopyFileOverwrite(t *testing.T) {
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dir := t.TempDir()
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src := filepath.Join(dir, "src.txt")
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dst := filepath.Join(dir, "dst.txt")
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os.WriteFile(src, []byte("new"), 0o644)
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os.WriteFile(dst, []byte("old"), 0o644)
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if err := CopyFile(src, dst); err != nil {
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t.Fatalf("CopyFile: %v", err)
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}
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got, _ := os.ReadFile(dst)
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if string(got) != "new" {
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t.Fatalf("got %q, want %q", got, "new")
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}
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}
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func TestCopyFileEmptyFile(t *testing.T) {
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dir := t.TempDir()
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src := filepath.Join(dir, "empty.txt")
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dst := filepath.Join(dir, "dst.txt")
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os.WriteFile(src, []byte{}, 0o644)
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if err := CopyFile(src, dst); err != nil {
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t.Fatalf("CopyFile: %v", err)
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}
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got, _ := os.ReadFile(dst)
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if len(got) != 0 {
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t.Fatalf("expected empty file, got %d bytes", len(got))
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}
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}
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